Specification: - Frequency: 2~1000Hz - Current consumption: about 40mA - Machine size: 150mm×100mm×50mm - Weight: 166g (excluding battery) - Power source: DC4.5V (Use three #5 alkaline dry batteries or external power source) - Automatic power off: The power is automatically cut off after 15 minutes’ treatment. - Classification: Internal powered Equipment Type B - Battery life: Approx. 3 months with 15-min. usage per day - Environmental temperature for using: 5~55℃ - Environmental temperature for storage: -20~55℃ - Environmental humidity for using: <80%RH - Environment humidity for storage: 10~95%RH - Safety Classification: Class II-BF Product Registration No: Tianjin O112 YX0001-2000 Enterprise Standard No: Tianjin, medical apparatus, supervision (approval) No. 2000 -226103
If you don't feel comfortable with the specification as offered, you can always consult the manual which can be downloaded here !